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P2443 is a diagnostic trouble code (DTC) for "Secondary Air Injection System Switching Valve Stuck Closed Bank 2". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Secondary Air Injection System Switching Valve Stuck Closed Bank 2
P2443 is an OBD-II generic code for the engine control module (ECM) detecting the exhaust pressure sensor is detecting no exhaust pulse when the bank 2 switching valve is commanded to be open while the engine is running.
The engine control module (ECM) monitors the exhaust pressure sensors to determine if the air injection system is operating correctly when it commands the switching valve open and closed.
The code is set when the air injection system switching valve is commanded open and the sensor is detecting no exhaust pulse indicating the valve is stuck closed or the sensor is defective.
The Check Engine Light will be illuminated and the code is set in the ECM memory as a fault.
The vehicle will not run any different in most cases.
The vehicle will fail emission testing.
Scans for codes and documents the code in the ECM and looks at the freeze frame data for the problem before clearing the codes and retesting
Clears the codes and retests to verify the code returns and two drive cycles
Tests the resistance of the switching valve and check as per specifications
Tests wiring for shorts between power supply and the pressure sensor
Tests the pressure sensor for proper resistance
Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired
Failing to clear the ECM codes after the codes are fixed
Failing to verify the failure before attempting testing and repairs
Code P2443 is an indication that the air injection system switching valve is not working or a sensor problem that will cause no drive symptoms. The exhaust emissions will be affected and will cause the vehicle to fail emission testing.
Code P2443 is for the secondary air injection switching valve stuck closed and the exhaust may have melted the valve causing it to stick closed. Make sure you correct any engine lean condition that could be the reason the exhaust is getting hotter than normal. Correct all codes retrieved.
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